pg_mem: A Malware Hidden in the Postgres Processes

A campaign targeting internet-facing Postgres databases exploits weak passwords to deploy malware that hides within Postgres processes, evading detection mechanisms. This sophisticated attack demonstrates how legitimate database processes can be hijacked for malicious purposes.

The pg_mem malware exploits weak or default passwords on internet-facing Postgres databases to gain initial access. Once inside, the malware embeds itself within legitimate Postgres processes, making it extremely difficult to detect using traditional security tools.

Attack Methodology

• Scanning for internet-facing Postgres databases with weak passwords
• Deploying malware that masquerades as legitimate Postgres processes
• Establishing persistent backdoors within database infrastructure
• Evading detection through process hiding and legitimate service mimicry

Detection and Mitigation

Organizations should implement robust password policies, restrict internet-facing database access, and deploy runtime protection solutions that can detect anomalous behavior within database processes. Defense-in-depth strategies are essential to protect against this type of advanced threat.